Poll: Clinton lead narrows in Iowa

Story highlights

  • Clinton is leading Sanders 42% to 40%
  • Uncommitted voters make up 14% of the caucusgoers, according to the poll

Washington (CNN)Hillary Clinton's edge over Bernie Sanders has shrunk to just two percentage points in Iowa, according to new Bloomberg/Des Moines Register poll of likely Democratic Iowa caucus voters released Thursday.

Clinton tops Sanders 42% to 40%. Ex-Maryland Gov. Martin O'Malley was at 4% in the new poll.
Last month, a Bloomberg/Des Moines Register poll found Clinton was ahead of Sanders by 9 points, 48% to 39%.
    In the new poll Thursday, 14% of those surveyed say they are uncommitted. In December, 8% were uncommitted.
    Support for the candidates mirrors that in other polls. Sanders is strongest among younger voters, while Clinton is leading with older voters and women.
    In a contrast between Republicans and Democrats, 57% of Democrats say the election is more about issues than leadership, 52% of Republicans say the election is more about leadership than issues. The Des Moines Register/Bloomberg had released a poll of likely GOP caucus-goers on Wednesday.
    The poll was conducted from January 7 to 10 for Bloomberg Politics and the Des Moines Register by Selzer & Co. The poll included 503 likely Democratic caucus-goers and has a margin of error of plus or minus 4.4 percentage points.